Assigitob of one-foueth to



(No Model.)

J. J. BIRCHER.

PUMP. No. 807.905. I Patented Nov. 11, 1884.

1i livgntrom I ATTORNEYS.

WITNESSES Z M UNITED Srarns -EParnsrr trier...

JOHN J. mncnna, or wrnrror, OHIO, ASSIGNOR or ONE-FOURTH TO WILLIAM M. JOHNSTON, or SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 307,905, dated November 11,1884.

(No model.)

To all whom it may concern.-

Be it known that I, JOHN J. BIROHER, of Wilmot, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a full, clear, and exact description.

This invention consists in certain novel con structions and combinations of parts in doubleacting pumps having but a single barrel and duplicate valvular suckers arranged to reciprocate toward and from each other, whereby increased elficiency and simplicity are ob tained, and a better working effect is produced, substantially as hereinafter described.

Reference is to be had to the accompanying drawings, forming a part ofthis specification ,in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a side view of a pump embodying my invention; Fig. 2, a vertical section of the same in a plane at right angles to Fig. 1. Fig. 3 is a vertical section upon alarger scale of the pump stock or barrel and duplicate suckers arranged therein. Fig. 4 is a plan of one of the sucker-packings (shown in Fig. 3) when made of thin sheet metal; and Fig. 5 is a like view of a similar suckerpacking when made ofleather, rubber, or other like soft and flexible material. Fig. 6 is a plan view of the valves of either sucker. Fig. 7 is a plan of the upper one of a pair of plates 7 used in either sucker to hold its packing in position, to carry the valves, and to provide for the attachment and working of the suckerrods. Fig. Sis a vertical section in part showing a modified construction of the upper part of the pump, and Fig. 9 an inverted transverse sectional view of the same in part on the line 00 x in Fig. 8.

Referring, in the first instance, more particularly to the first six figures of the drawings, A indicates the pump-stock, made of any suitable material, and in the form of a pipe without check-valve, and which may be of uniform diameter throughout, thus avoiding all contracted parts or places in it.

B B are the two reciprocating suckers, which move toward and from each other simultaneously, and which are operated by the independent sucker-rods O 0, arranged in paralwhich is of cup form, with openings 0 through it for the passage of the fluid, has its bent-up portion cut so as to form a series of flaps to allow of its making an easy fit within the stock or barrel, so as to do away with any heavy pressure or friction against the sides thereof, but with the flaps so arranged relatively to each other that the fluid will be prevented from passing by or through them, the flaps overlapping one another for the purpose. WVhen metallic-packer suckers are used, then the packings b are made of thin sheet metal, as shown in Figs. 2, 3, and 4, with their peripheral portions cut radially at short distances apart all around it, and such cut peripheral portion afterward bent up to give the packing its required cup form, with said out portions overlapping one another to make the sucker a close but easy working one. The suckers are strengthened and the packings I) supported and clamped at their base by upper and lower plates, dd, of similar construction, and having apertures c in them corresponding with the openings 0 in the packings, and the whole of each sucker is kept together and its operating rod 0 or O secured to the sucker by upper and lower nuts, 6 e, the upper one,

6, of which serves also to hold the hinge-pin f of the valves g g of each sucker in its place, or socket It made in oracross a central boss of the upper plate, d. The valves g g are in duplicate for each sucker, and the same hingepin f serves for both; but the two valves are only hinged each on one side of the vertical axis of the suekerthat is, on reverse sides thereof-each valve being cut away for the purpose, as shown at i i, Fig. 6. This makes an easy fitting of the valves to their places, and said valves are partly retained in position by being cut in their center to play outside of the boss on the upper plate, (Z, and are prevented from falling over when open by their cut portions coming in contact with either sucker-rod O O, or said valves may be otherwise prevented from sliding or slipping out of place. The sucker'rods O C may eitherbe made in one piece each or in sections linked together, according to the depth at which the pump is required to work. The lower sucker-rod, C, is fitted to work through the upper sucker. Both of said rods may be made light, inasmuch as the strain upon them in pumping is altogether confined to their pulling and not their pushing stroke. The pump-stock A being clear or plain, and having no valves, is not only easy to manufacture, and may readily be kept clean, but the suckers maybe easily put in or taken out from above, and the pump itself need not be removed for repair.

The suckers which are designed to work in the lower part of the stock are operated by a crank, D, and rods 7r: 7t,connecting the crank with the sucker-rods. As the lower sucker, B, is lifted by its rod 0 its valves are shut, and the fluid or water being raised presses the packing I) close against the stock. As one body or quantity of water is lifted by said lower sucker a fresh supply of water is drawn up beneath it, and as the upper sucker works downward while the lower sucker is moving upward the water between the suckers is delivered through the valves of the upper sucker, and the pressure of the fluid acts upon the packing b of the upper sucker to press it slightly inward and to provide for water being also passed up around it, thus re lieving the downward-moving sucker of friction against the sides of the stock. Upon a half-turn of the crank the two suckers meet, or nearly so, after which on the travel being reversed by a continued movement of the crank the valves of the upper sucker are closed, and the valves of the under sucker are opened to further lift the water that had been previously raised and to take ina fresh charge of water between the suckers, thus keeping up a continuous stream, and both suckers being free from pressure or friction on the sides of the stock and from most of their surface resistance when moving downward, so that they are free to fall of their own weight, or nearly so.

In Figs. 1 and 2 the sucker-rods O G are represented as guided at their upper ends, where they are connected with the rods k by slots Z lin the upper portion of the stock; but

to reduce friction, and as especially applieable to heavy pumps, the rods 0 C may be fitted to work through guideplates m m, arranged in the upper portion of the tube or stock and connected by stay-rods a n, the upper one ofsaid plates forming a lid, and having fitted within it a guide-pulley, 0, against which, on opposite sides of its axis, the reversely-operating rods O O bear and work.

The crank D, which operates the suckers, is of peculiar construction, being a double onethat is, cranked on opposite ends of its axle c,for connection with the rods is k of the sucker-rods, and with either or both of its wrists, with which said rods 7o connect, again cranked outward or extended to form one or more cranked handles 7). This provides for at least one of the rods k to be arranged between the axle and the handle or power end of the crank, and gives a very efficient leverage for a limited sucker-stroke.

Having thus described my invention, I claim as new and desire to seen re by Letters Patent- 1. The plate (Z, provided with aboss having a socket, h, in combination with the suckervalves 9 9, cut away at their central portions to fit around said boss, and provided on opposite sides with eyes through which passes the hinge-pin f, secured within the socket 71, substantially as set forth.

2. The plate (I, provided with a boss having a socket, h, in combination with the suckervalx'es g 9, cut away at their central portions to fit around said boss, and provided on opposite sides with eyes through which passes the pin f, said pin being secured within the socket by the same nuts that secure the suckerrods to said plates, substantially as set forth.

3. The combination, with the stock A, and

simultaneously reverscly operating suckerrods 0 G,of the guide-plates m m, the staysav a, and the pulley 0, substantially as specified.

4. The combination of the stock A, guide plates at m, stays a 91, and pulley 0 with the sucker-rods O O, rods 7c 7c, connected to the sucker-rods at their upper ends,and crank D, formed with bends above and below the axle portion (6, to form wrists to which the lower ends of said rods 70 7a are connected, whereby the suckerrods maybe operated simultaneously and in opposite directions, substantially as set forth.

JOHN JACOB BIRGHER. 

